Item is a photo-flash bulb adapter no. 681, manufactured by Morse Eureka.

Item consists of a 16mm motion picture camera, Model 7 made by Keystone Manufacturing Company in Boston Massachusetts in 1937. The company was an American manufacturer known for movie cameras with built-in electronic flash in the 1930s. The camera features a summer exposure guide on the front and has a Switar 1:1.8 f=16mm lens.